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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Amount of unrecognized tax benefits.

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Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

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Summary of Significant Accounting Policies - Income Taxes (Details) - USD ($) $ in Thousands				12 Months Ended
	Feb. 04, 2018	Jan. 01, 2018	Dec. 31, 2017	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Income taxes
Unrecognized tax benefits				$ 1,000	$ 1,000
Domestic corporate tax rate
Statutory rate (as a percent)		21.00%	35.00%	21.00%	21.00%	33.70%
Cumulative effect of change in accounting standard					$ (117)
Retained earnings				$ 366,793	323,515
Maximum
Income taxes
Change in unrecognized tax benefits				$ 1,000	$ 1,000	$ 1,000
ASU 2016-16 - Intra-Entity Transfers of Assets Other Than Inventory
Domestic corporate tax rate
Cumulative effect of change in accounting standard	$ (100)